If you refer to your laptop's user guide it stated that the max memory is 4 gb. Referring to this link (http://ark.intel.com/products/chipsets/28116) based on what you have provided it also stated that the max memory is 4 gb. So you're limited up to a total of 4 gb with 2 gb modules in each slot.
Boyet, thanks for the reply. After further research, I found that the chipset that is in the laptop can support a 64bit OS. And, the 64 bit OS can support 8GB of memory. I have installed the memory and the system accepted it. Here are a couple of snips of system info, and cpu-z, showing the installed memory. Thanks again for you reply.
The laptop is handling the extra memory just fine. As a matter of fact, I also added an SSD hard drive, so bootup speed is blazing, and overall performance has increased significantly. gllpop.
I'm doing about the same thing with my D830. I have the T9500 but still run with the T7300 and the new Seagate SSHD 1 To STATA III. I have previously a 500 Gb 7200t SATA II HD.
The difference between the 2 HD is coming after some restarts and become intel(ligent) to work faster. I also have a SSD 120 Go + HD SATA Dbay for the 500 Go, it was my first idea.
I'll do tests but all I can say now that's it's better to do a new installation of Windows (I use both Dell XP SP3 x32 & Seven x64 boxed with dual boot). My old XP not run so faster than the new Seven. It's not due to the hard disk technology but to the age of my XP installation. Maybe I'd bettter to run only Seven on the SSHD and let XP to the 500 Gb if I need it. Maybe... I use TuneUp Utilities 2014 on my computers to maintain them on top but many little files grows up year after year. That's Windows
It works fine with 4Gb with Seven X64 but if I can find it, I'll add more memory to increase to 8 Gb. It's just very expensive to do even if that's work fiine.
Did you see a real power increase when running with the T9500 ?